Pulley.



H. J. GILBERT.

PULLEY.

APPLICATION FILED MAR. a, 1904.

1,026,796., Patented May 21, 1912.

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UNITED STATES PATENT OFFICE.

HENRY J'. GILBERT, 0F SAGINAW, MICHIGAN.

7:5 v I PULLEY. 1

Specification of Letters Patent.

Patented May 21, 1912.

To all whom it may concern:

Be it known that I, HENRY J. GILBERT, a citizen of the United States,residing at Saginaw, in the county of Saginaw and State of Michigan,have invented certain new and useful Improvements in Pulleys, of whichthe following is a specification.

My invention has relation to pulleys, more particularly to those of thesplit type, and the object thereof is to produce a simple, eflicient anddurable pulley of this character in which the rim is made of wood andthe remainder thereof, comprising the spoke arms and rim supportingstructure, are formed of sheet metal, whereby a combined metal and woodpulley is obtained.

In the accompanying drawing, Figure 1 is a side elevation of a form ofpulley selected to embody and illustrate my invention; Fig. 2 across-section on the line 2 of Fig. 1; Fig. 3 a section taken on line 3of Fig. 2; Fig. 4 a cross-section of a modified form of pulleyconstruction; and Fig. 5 a modified form of construction as regards themetal rim se ments.

In t e present instance, the pulley comprises essentially the pair ofdiametrically arranged spokes or spoke arms A, centrally expanded toform a shaft opening or bore B, the metal segments, and the wooden rimoutside thereof and secured to the outer face thereof. The spoke arms Aare substantially the same in construction as those shown in my priorapplication filed June 9, 1903, Serial No. 160,730, being approximatelyU-shape in cross-section and provided at their ends with three tongues,that is two laterally bent tongues a and a middle tongue a, bent towardthe meeting line or joint of the pulley halves. The spoke-arms andconsequently the pulley halves are clamped together by means of clampingbolts A. The metal segments are two in number, each being asemi-circular iron approximately cross-shape in section and consistingof the flange C and the two webs or stems C and 0 extending inwardly andoutwardly respectively from the flange C. The flange C is somewhatlonger than necessary to form a sen1i-eircle andits extended ends are-provided with tongues c which are inwardly and backwardly folded toform sockets for the purpose of receiving and engaging the tongues a anda of the spoke arm. For securin these parts together, in addition totheir described interlooking, I prefer to provide a rivet a and bolts 0,which latter also pass through the wood rim hereinafter described. Theinner web or stem C terminates a distance from the division line orjoint between the pulley halves equal to the width of the end of a spokearm, with the result that the ends of such Web rest upon the flattenedtop of its spoke-arm. As indicated in Fig. 1, the ends of the web aresecured to its spokearm by means of lugs projecting from such ends ofthe web and headed over to form rivets 0 However, I do not hereinbroadly claim such particular construction, as I have made the same thesubject matter of a separate application, filed March 8, 1904:, SerialNo. 197,072.

As is common in wood rim construction, the wood rim herein shown isbuilt up,that is made of a series of strips D and the same is properlygrooved or channeled circumferentially on its inner face torcceive theouter web or stem C of the rim supporting cross-iron, as clearlyillustrated in Fig. 2. For the purpose of securing the rim to the metalsegments and for clamping the wood strips together, I provide a suitablenumber of bolts cl passing transversely through the said strips andthrough the web C It is obvious that the wood rim, as well as the metalsegments, may be made of any desired width, and yet retain all the features and advantages of my invention.

As illustrated in Fig. 4, the flange C may be extended so as to provideroom for attachment of screws d passing therethrough and into the woodrim to provide means additional to the bolts 03 for securing the woodrim to the flange C, but in this instance rivets 0 may be used in placeof the bolts 0 shown in Figs. 1, 2 and3.

In Fig. 5 I have shown a modified form of metal rim segment providedwith a wood rim in which such segment is composed of a T-iron E to whichthe wood rim D is secured as in Fig. 2.

The pulley resulting from the construction hereinbefore described is, ineffect, a combined wood and metal pulley, comparatively simple andinexpensive of manufacture and efficient and durable in service.

I claim:

1. A pulley comprising metal segments having internal sockets formed byreversely bending their meeting ends, spokes engaged by such sockets,and a wood rim secured to the outer face of such segments; substantiallyas described.

2. A pulley comprising metal segments having an inwardly directed web,and inturned meeting ends, spokes secured to such web and ends, and awood rim secured to the outer face of such segments; substantially asdescribed.

3. A pulley comprising metal segments having an inner and an outer Web,spokes connected with the inner web, and a wood rim connected with theouter web; substantially as described.

4:. A pulley comprising metal segments composed of flanges and inwardlyand also outwardly directed webs arranged substantially centrally of thesegments, spokes interlocked with both the flanges and the inwardlydirected webs, and a rim composed of a series of sections secured tosaid outwardly directed webs; substantially as described.

.5. A pulley comprising metal rim segments having outwardly and inwardlyprojecting webs, spokes connected with both the segments proper andtheir inwardly projecting webs, and a rim secured both to the outwardlyprojecting webs and to the segments; substantially as described.

6. A pulley comprising metal rim segments having an outwardly projectingweb and also an inwardly projecting web, said webs being arrangedsubstantially central of the segments, spokes connected at their endswith the segments and with the inwardly projecting web, a rim in whichsaid outwardly projecting web is embedded, and fastening means passingtransversely through said latter web and through said rim; substantiallyas described.

7. A pulley comprising metal rim segments having outwardly and inwardlyprojecting webs, spokes connected with both the segments proper andtheir inwardly projecting webs, a rim which is arranged upon the outersurface of such segments and in which the outwardly projecting webs areembedded, means for securing the rim to the segments proper; andseparate means for securing the rim to said last named webs;substantially as described.

8. A pulley comprising metal rim segments having an outwardly projectingweb and also an inwardly projecting web, spokes connected at their endswith the segments, a rim which is made of a series of parallel strips ofwood concentric with the axis of rotation of the pulley and in whichsaid outer web is embedded, and means for securing said strips to theouter web and to the rim segments; substantially as described.

9. A pulley comprising metal rim'segments having an outwardly projectingweb and also an inwardly projecting web, spokes c nne ted at their endswith the segments and with the latter web, a rim which is made of aseries of parallel strips of wood concentric with the aXis of rotationof the pulley and in which said outer web is embedded, and means forsecuring said strips to the outer web and to the rim segments comprisingfastening bolts passing transversely through them and through said outerweb; substantially as described.

10. A pulley comprising a wood rim, metal segments cross-shape insection, and spoke arms connected therewith, said wood rim being engagedby the outer Web of such segments; substantially as described.

11. A pulley comprising a wood rim, metal segments, such segments beingcrossshape in section, and spoke arms Whose ends are interlockedtherewith, said wood rim being engaged by the outer web of suchsegments; substantially as described.

12. A pulley comprising a wood rim, metal segments, such segments beingcrossshape in section, and provided at their meeting ends with infoldedtongues forming sockets, and spoke arms whose ends are suitably shapedto be engaged by such sockets, said wood rim being secured to the outerface of such segments; substantially as described.

13. A pulley comprising a wood rim, metal segments, such segments beingcrossshape in section, and provided at their meeting ends with infoldedtongues forming sockets, and spoke arms whose ends are suitably shapedto be engaged by such sockets, said wood rim being secured to the outerweb of such segments; substantially as described.

14. A pulley comprising a wood rim, metal segments, such segments beingcrossshape in section, and their flange portions provided, at theirmeeting ends, with tongues which are infolded to form sockets, and spokearms whose ends are engaged by such sockets, said wood rim being securedto the outer face of such segments; substantially as described.

15. A pulley comprising a wood rim, metal segments, such segments beingcrossshape in section and having the ends of their inner web portionresting against the spoke arms, and spoke arms whose ends are connectedwith the-segments, said wood rim being secured to the outer face of suchseg-' ments; substantially as described.

16. A pulley comprising a wood rim, metal segments, such segments beingcrossshape in section, and spoke arms secured to,

17. A pulley comprising a wood rim, 1

metal segments, such segments being crossshape in section, and spokearms connected with the inner side of such segments, Whose outer side isconnected with said rim; substantially as described.

18. A pulley comprising a wood rim, metal segments, such segments beingcrossshape in section, and spoke arms connected therewith, and bolts forsecuring the rim to said segments; substantially as described.

19. A pulley comprising a wood rim,

metal segments, such segments being crossshape in section, and spokearms connected therewith, and bolts passing transversely through the rimand the outer web of said segments for securing such rim thereto;substantially as described.

HENRY J. GILBERT. Witnesses:

S. E. HIBBEN, LOUIS B. ERWIN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

